Hard drive letter messed up after changing motherboard

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  1. sylphan
    Posts : 14
    Windows 7 Ultimate x64
       New #1

    Hard drive letter messed up after changing motherboard


    Hello,

    Nice to meet you

    I have problem, after changing motherboard and cpu from AMD and intel, my windows go to infinite repair loop and drive letter messed up (I have 5 hardrive, with 7 partition), trying many way, failed to recover the windows, so I decided to reinstall my windows, using 1 hardrive, success, but, when I attach the rest hardrive, the drive letter messed up again, my OS drive become D and one of my hardrive become C, windows cannot boot, even failed when I try to reinstall again (cannot continue after first restart) & when choosing drive, there are warning that's all my drive unable to became boot device

    now, how I can reinstall the windows?

    Thanks,

    Sylphan
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  3. sylphan
    Posts : 14
    Windows 7 Ultimate x64
    Thread Starter
       New #2

    hello, anyone can help? I just want to rid the drive letter, so I can install the windows & re-assign the hard rive...
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  4. f1andy83
    Posts : 28
    Windows 7 ultimate 64 bits
       New #3

    Have you been to your disk manager yet? And reassign the drive letter there.
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  6. f1andy83
    Posts : 28
    Windows 7 ultimate 64 bits
       New #4

    I would personally reformat the drives using a secondary computer. Might be faster.
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  7. ignatzatsonic
    Posts : 12,012
    Windows 7 Home Premium SP1, 64-bit
       New #5

    sylphan said:

    now, how I can reinstall the windows?
    If you have a valid 25 character Product Key and a Windows installation disk that matches the Product Key, disconnect all but one hard drive and reinstall.

    Then activate with the Product Key.

    The new installation will be drive C.

    Then reconnect the other hard drives.
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  8. sylphan
    Posts : 14
    Windows 7 Ultimate x64
    Thread Starter
       New #6

    f1andy83 said:
    I would personally reformat the drives using a secondary computer. Might be faster.
    f1andy83 said:
    Have you been to your disk manager yet? And reassign the drive letter there.
    Thanks for reply, I had format my OS drive, install fresh, only using 1 hard drive, but when rest hard drive added, all messed up again


    ignatzatsonic said:
    sylphan said:

    now, how I can reinstall the windows?
    If you have a valid 25 character Product Key and a Windows installation disk that matches the Product Key, disconnect all but one hard drive and reinstall.

    Then activate with the Product Key.

    The new installation will be drive C.

    Then reconnect the other hard drives.


    Thanks for reply, I have try that way, but when I reconnect the other hard drives, the drive c become d... everything messed up again, cannot boot & cannot finish the installation....
    Last edited by sylphan; 06 May 2012 at 21:50.
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  10. sylphan
    Posts : 14
    Windows 7 Ultimate x64
    Thread Starter
       New #7

    Hello, my motherboard is Asrock z77 Extreme6, 6 sata port populated... but the drive letter messed up even after re-install the windows... anyone can help?
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  11. ignatzatsonic
    Posts : 12,012
    Windows 7 Home Premium SP1, 64-bit
       New #8

    sylphan said:



    Thanks for reply, I have try that way, but when I reconnect the other hard drives, the drive c become d... everything messed up again, cannot boot & cannot finish the installation....

    DON'T reconnect the other drives until the installation is FINISHED.


    Reboot after you complete the installation with only 1 drive attached.

    Then look in Windows Disk Management and post a screenshot.

    All of this with ONLY 1 drive connected.

    Worry about the other drives later.
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  12. sylphan
    Posts : 14
    Windows 7 Ultimate x64
    Thread Starter
       New #9

    Thanks for reply,

    I reconnect it after finished all installation, installing driver, & some essential program... (7zip, Foxit, LibreOffice)
    then I shutdown my PC & reconnect the rest hard drive, the hard drive letter messed again... windows refuses to boot

    Okay then, I'll do it again & post screenshot of my Windows Disk Management, but I'm working in office now, so maybe latter after I'm go home
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  13. karlsnooks
    Posts : 10,200
    MS Windows 7 Ultimate SP1 64-bit
       New #10

    sylphan,

    Simple:

    1. Disconnect all drives except for the one where you want to install Win 7.
    2. Wipe the hard disk clean using diskpart.
    3. Install win 7.


    ==========================
    now here's how to wipe that hard disk clean using your Win 7 DVD.
    1. boot up your Win 7 DVD
    2. at the very first dialog, hit SHIFT + F!0 key combo.
    that will get you to a command prompt, that looks like this:
    X:>
    now enter these commands:

    USE THE DISKPART PROGRAM TO “CLEAN” THE HARD DISK
    Type the commands shown, hitting the Enter key after each.

    Do not proceed to the next command until the current command is finished.

    · DISKPART (the command prompt will change to DISKPART>)
    · LIST DISK (this will list the disks present)
    · SELECT DISK 0 (assuming disk zero is the desired hard disk)
    · DETAIL DISK (this will show you info regarding the disk you selected)
    · CLEAN ALL (this is the command to write zeros to entire disk)
    This can take half a day for a 2 Terabyte disk.
    · EXIT(this will exit you from the DiskPart program)
    · EXIT(this will exit you back to the Windows 7 install program)
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